LARRY RIBSTEIN ON INSIDER TRADING BY MEMBERS OF CONGRESS: “With all of the attention being given to insider trading by hedge funds and malfeasance by corporate executives, it’s worth reminding ourselves that the politicians who seek to impose discipline are themselves no angels. An important study published seven years ago revealed that U.S. senators were reaping returns from stock trading that strongly suggested they were trading on an informational advantage. Profits depended on their seniority, and therefore, presumably, power to influence legislation.”